Electron Review

How many electrons can the first energy level (s level) hold?

• 1
• 2
• 8
• 0

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can the f sublevel hold?

• 8
• 10
• 2
• 14

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

An atom has mass number 16. How many neutron this atom has if the atom located at group 6 period 2?

• 8 neutron

• 10 neutron

• 14 neutron

• 8 proton

Tags

NGSS.MS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The 4 orbitals are

• s, p, d, f

• a, b, c, d

• 2, 4, 6, 8

Each row on the periodic table represents:

• an energy level

• a sublevel

• an electron

• an orbital

Tags

NGSS.HS-PS1-1

What does Hund's rule state?

• An orbital can contain two electrons only if the electrons have opposite spins.

• An orbital can contain two electrons only if all other orbitals at that sublevel are empty.

• An orbital can contain two electrons only if the electrons have different energy levels.

• An orbital can contain two electrons only if all other orbitals in that sublevel contain at least one electron.